Automobile radiator-heating device



J; W.' SWAN AUTOMOBILE RADIATOR HEATING DEVICE June 29,1926. 1,590,454

Original Filed p 19 2- Sheets-Shut 1 June 29 1926.

' J. w. SWAN AUTOMOBILE RADIATOR HEATING DEVICE 2 Sheets-Sheet 2 original Filed Sept. 18, 191

Patented June 29, 1 926.

UNITED STATES PATENT OFFICE.

, JOHN W. SWAN, F STAMFORD, CONNECTICUT.

AUTOMOBILE RADIATOR-HEATING DEVICE.

Original application filed September 18, 1918, Serial No. 254,599. Divided and this application filed J'uly Serial No. 311,556.

The invention relates to improvements in means for utilizing the exhaust heat of an internal combustion engine for heating the water of the engine radiator, and constitutes a division of my copending application, Serial No. 254,599, filed September 18, 1918.

To secure a successful operation of internal combustion engines, especially when the temperature of the air is rather low, it is necessary to utilize all of the heat of the fuel possible to preheat the water passing through the engine jackets, and it is highly desirable to provide a means by which the temperature of this Water is maintained substantially uniform irrespective of the work of the-engine. v r

The invention therefore, further comprises means for effecting the passage of the hot exhaust gases from the engine cylinders into association with the water of the radiator should the temperature of this water drop below a given degree, and for automatically cutting off the supply of gases passing tothe water and compelling. the discharge thereof through a direct discharge disposed remotely from the radiator when the temperature of the water is at or above a given temperature.

ith this conception in mind, the invention includes a thermostat disposed within the'return water pipe from the radiator to the enginehaving connections with a plurality of dampers, the thermostat, of course,

acting automatically in response to the heatof the "water passing from the radiator, and should the water become chilled, a contractraction of the thermostat will cause an operation of the valves directly opposite tothe operation produced by the expansion of the thermostat closing the damperin the exhaust pipe leading to the radiator and opening the other damper in the direct exhaust,

allowing the exhaust gases to pass on directthereby compelling the gaseous products of 1y to the muffler without imparting heat to the water in the radiator.

In the accompanying drawings I have 4 are detail views of the drawings wherein like reference characters indicate corresponding parts, the numeral 1 designates a radiator which may be ofany conventional type, having the upper and lowerheadersQ and 3, the lower header be ing incom munication, with the engine cylinders by means of the water conducting pipe 4 leadlng to the foremost cylinder acket, this pipe being broken away, but the construction is the same as is now universally used for cenveying water from a radiator to the engine jacket. The engine is disclosed by the reference character 5 having the usual engine cylinders 6, and leading from the engine is the return water pipe 7 havingcommunication with the different jackets for conveying the water that has served in cooling the engine cylinders back to the upper header 3 for cooling.

It is highly desirable, particularly during the colder seasons of the year that the heat of the radiator be maintained and the water therein additionally heated prior to its delivery to the engine cylinders, and to this end means are provided for heating the radiator water from the exhaust gases of the engine, comprising a pipe 8 leading from the exhaust manifold 8? into which the exhaust of the different cylinders is introduced, the pipe 8 discharging into the lower portion of the radiator, see Figure 3, into a container 9 for this purpose, a suitable conveying pipe 10 leading from the opposite side of this container 9 into .what may betermed the direct-exhaust pipe 11 communicating with amumerer any well known'type. The direct exhaust pipe 11, is, of course, in communication with the manifold 8 and exhaust gases it not to be used for heatingtne. water in the radiator pass directly through the exhaust manitold'and the pipe 11 to the murder by reason oi suitable controlling valves disposed therein which will be now described.

To control the passage of the exhaust gases 'of 'an-y o-tthe well known constructions,

which operates in the usual'manner being etfectedby-the-heat of-the water returning to the radiator" from the engine jackets. The thermostat has the usual stem part 12 pivoted between ends of asuitablearm 13 of' a bell crank lever. the opposite arm of which is indicated by the reference character 14, the entire bell crank lever comprising these two arms being pivotal lymountedat the point-1.5 uponany-suitable support. The free end of the arm 13 is pivote'd'as at 15, to a. link 16 which is in-turn pivoted to the crank arm'17' rigid with a suitable valve 18 disposed within the indirect exhaust pipe 8 and'serving to open 'orclose this pipe. A similar valve 19"isdisposed within the direct exhaust pipe 11, a'nd'thisvalve is likewise connected with the arm 14 of the bell crank lever by a suitable pivoted link or rod 20 attachedto the crank 20' of this valve.

The valves 18 and 19 disposed in the indirect exhaust pipe 8 and direct exhaust pipe 11, respectively, are so arranged that when one is open, the other is closed, and it will be readily understood that upon the rocking of the bell crank lever through an expansion or contraction of the thermostat 12, a shifting of the links 16 and 20 occurs, which will cause a manipulation of the valves so as to open the valve that was closed prior to this shifting and close the valve at as ope ed s m aneous y t th- Th he m sta se ed is n h h i withstand a certain degree of heat before expand ng and any de irabl herm st can b e ed s lens s t acc mp sh s the desired ends. I

In Figure 5 of the drawings, I have disclosed a. slightly modified form of the invcntionwherein water from the radiator 1 may be led through. a suitable water conducting pipe 21 into a tank 22 through which the exhaust gases circulate instead of conveying the gases directly to the chamber 9 disposed within the radiator 1. After heating the water in this manner, the same is redclivered to the radiator header through a return pipe .23 from. where it is-conveyed to theuengine cylinders, It will be understoodthat this form of apparatus is used at times where it is found more. preferable to heatthe water outside of theradi'ator than .to convey the exhaust gases directly to a chamber disposed within theradiator.

While it is believed that the operationof the device will be understood from the foregoing, the same may be briefly stated as follows:

Assuming the water in the radiator to be rather cool while the engine is in operation, due to climatic conditions, then'the thermostat 12 will contract until it-takestheposition shown in Figure 1 having- ,closed the val-ve-19by rockingthe crank arm 1% and likewise opened the valve 18 throughthe actuation of the link 16. This will cause the products of combustion to passdirectly to the radiator serving to heat the water therein to a proper temperature, but should thetemperature of this water exceed a given point, then the thermostat will become heated, expandingas usual, this expansion clos-' ing the valve 18 and opening the valve 19 due to'a rocking of the bell crank lever whereupon the exhaust gases are prevented from passing to the radiator, but compelled to p'ass through the direct exhaust pipe 11 to amuffler.

In the accompanying drawings I have shown thepreierred embodiment of thein vention, but-the construction therein shown is'subject to many changes without departing from the spirit of theappended claims Q I claim s Havin thus described the invention, what radiator having vertically extending pipes for a cooling medium, a container within the radiator, said container having passages through which the vertical pipes of the radiator pass, means for conveying a cooling medium from the engine to the radiator, means for conveying'the cooling medium from the radiator to the engine, and means for conveying the exhaust from the engine to the container, said exhaust circulating around the vertical extending pipes of the radiator.

2. The combination with an engine, a ras diator having vertically extending pipes therein, means for conveying a cooling. medium from the engine to the radiator,

means for conveying the cooling medium from the radiator to the engine, said cooling medium circulating through the vertically extending pipes While in the radiator, a container positioned Wholly Within the radiator and positioned to receive the lower ends of the vertically extending pipes, and

means for conveying the exhaust from the engine to the container, said exhaust being directed against the lower ends of the vertically extending pipes.

In testimony whereof I hereunto aflix my signature.

JOHN W. SWAN. 

